If you have a drawer full of random metric and standard sockets it can take a while to find the right one. Instructables user pat42586 shows how to make a simple wood organizer for your sockets out of a board and two dowels.
You can purchase similar organizers at a hardware store (or from Amazon) if you prefer, but you can build a DIY version for far less, especially if can scrounge the board and dowels.
Looking at the layout in the photo above both metric and standard sizes are mixed with the closest sizes over and under each other. After you’ve decided on your layout, mark the board for each of the holes, drill out the holes with a ⅜” bit or a ¼” bit, cut your dowels in 1 ¾” inch sections, dip the tip in glue, and hammer it into the holes. When you’re finished you can label your board making sure not to cover the numbers when the sockets are placed on the dowels.
For those who prefer to keep their sockets in a drawer you just place the organizer face-up in the drawer instead of hanging it on the wall.
A Better Socket Organizer | Instructables